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How to get the first column of a pandas DataFrame as a Series?
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edited Oct 23 '18 at 8:32
answered Mar 12 '13 at 13:33
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RGB to hex and hex to RGB
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1289
Note: both version of rgbToHex expect integer values for r, g and b, so you'll need to do your...
How to add a new row to an empty numpy array
...2,3*i+3])
.....: l = np.asarray(l)
.....:
1000 loops, best of 3: 1.18 ms per loop
In [211]: %%timeit
.....: a = np.empty((0,3), int)
.....: for i in xrange(1000):
.....: a = np.append(a, 3*i+np.array([[1,2,3]]), 0)
.....:
100 loops, best of 3: 18.5 ms per loop
In [214]: np....
PHP regular expressions: No ending delimiter '^' found in
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edited Jan 8 '11 at 17:09
answered Jan 8 '11 at 17:04
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MySQL's now() +1 day
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answered Oct 8 '10 at 3:34
Mark ByersMark Byers
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Is the sizeof(some pointer) always equal to four?
...size 2 on a 16-bit system (if you can find one), 4 on a 32-bit system, and 8 on a 64-bit system, but there's nothing to be gained in relying on a given size.
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Go to first line in a file in vim?
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418
In command mode (press Esc if you are not sure) you can use:
gg,
:1,
1G,
or 1gg.
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Converting a double to an int in C#
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JonJon
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Hex representation of a color with alpha channel?
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85
In CSS 3, to quote from the spec, "there is no hexadecimal notation for an RGBA value" (see CSS...
Reload the path in PowerShell
...t shells opened.
– Frank Fu
Aug 2 '18 at 1:47
The problem with chocolatery is you can't use it in enterprises, it coul...